Inflation and real stock returns revisited.
I. INTRODUCTION
This article empirically reinvestigates the relationship between real stock returns and inflation. According to according to prep. 1. As stated or indicated by; on the authority of: according to historians. 2. In keeping with: according to instructions. 3. Fisher (1930), (1) in an efficient market, real stock returns should reflect expectations only about real factors such as growth in output and time preference of savers such that real stock returns and inflation should vary independently. In other words Adv. 1. in other words  otherwise stated; "in other words, we are broke" put differently , on average, investors are fully compensated for erosions in purchasing power Purchasing Power 1. The value of a currency expressed in terms of the amount of goods or services that one unit of money can buy. Purchasing power is important because, all else being equal, inflation decreases the amount of goods or services you'd be able to purchase. 2. over time. However, this socalled generalized gen·er·al·ized adj. 1. Involving an entire organ, as when an epileptic seizure involves all parts of the brain. 2. Not specifically adapted to a particular environment or function; not specialized. 3. Fisher hypothesis The Fisher hypothesis is the proposition by Irving Fisher that the real interest rate is independent of monetary measures, especially the nominal interest rate. The Fisher equation is direct correlation between stock returns and inflation, most empirical studies Empirical studies in social sciences are when the research ends are based on evidence and not just theory. This is done to comply with the scientific method that asserts the objective discovery of knowledge based on verifiable facts of evidence. , including Nelson (1976), Fama (1981, 1983), Geske and Roll (1983), Gultekin (1983), Kaul (1987), and Solnik (1983), uncover a negative effect of inflation (anticipated and/or unanticipated) on (real or nominal) stock returns. These apparent inconsistencies between the data and the predictions of economic theory have been termed as the stock returninflation puzzle and cited as evidence of monetary nonsuperneutrality or irrationality (and market inefficiency). (2) To reconcile the seemingly seem·ing adj. Apparent; ostensible. n. Outward appearance; semblance. seeming·ly adv. conflicting contributions, Danthine and Donaldson (1986) provide a rational expectations equilibrium model in which a negative relation between stock returns and inflation arises from nonmonetary sources (e.g., a real output shock) and a positive relation is driven by purely monetary sources. Stulz (1986), Marshall (1992), and Bakshi and Chen (1996) also assert that stock returns may be negatively correlated cor·re·late v. cor·re·lat·ed, cor·re·lat·ing, cor·re·lates v.tr. 1. To put or bring into causal, complementary, parallel, or reciprocal relation. 2. with inflation, especially when the source of inflation is related to nonmonetary factors. Evidently, Hess and Lee (1999), Khil and Lee (2000), and Lee (2003) find that while monetary shocks drive a positive correlation, real (fiscal or real output) shocks result in a negative correlation Noun 1. negative correlation  a correlation in which large values of one variable are associated with small values of the other; the correlation coefficient is between 0 and 1 indirect correlation between stock returns and inflation. From a different perspective, Kaul (1987, 1990) argues that the relation between these two variables depends on both the money demand and the money supply. Specifically, while the combination of money demand effects with a countercyclical monetary response accentuates a negative correlation, money demand shocks along with a procyclical monetary response lead to a neutral or positive correlation between real stock returns and inflation. Similar arguments can be found in Day (1984), Kaul and Seyhun (1990), Boudoukh, Richardson, and Whitelaw (1994), and Gallagher and Taylor (2002) and are supported by compelling empirical evidence (see, e.g., Kim 2003; Lee 1992). As an alternative, this article models the real stock returninflation relationship as intrinsically dynamic, explicitly distinguishing between the short run and the long run. Such a distinction is crucial, because imperfect imperfect: see tense. information, rigidity rigidity /ri·gid·i·ty/ (rijid´ite) inflexibility or stiffness. claspknife rigidity , and/or contractual obligations are more prevalent in the short run than in the long run. In that sense, the response of real stock returns to inflation could differ in the short run versus long run. Moreover, we assess the long and shortrun impacts of inflation uncertainty on real stock returns. As argued, the real costs of inflation are associated with its uncertainty. Greater inflation uncertainty resulting from higher inflation may lead to economic inefficiency, lower real investment, and unemployment, thereby reducing economic growth. Thus, it is interesting to see if there are independent effects of inflation uncertainty on real stock returns both in the short run and in the long run. In so doing, this article uses an innovative econometric e·con·o·met·rics n. (used with a sing. verb) Application of mathematical and statistical techniques to economics in the study of problems, the analysis of data, and the development and testing of theories and models. technique to explore the longand shortrun relationships between real stock returns and inflation (both anticipated and unanticipated) and the relationships with inflation uncertainty. It departs from earlier work and complements recent evidence in at least three aspects. First, we conduct a panel analysis on data pooled from 16 industrialized in·dus·tri·al·ize v. in·dus·tri·al·ized, in·dus·tri·al·iz·ing, in·dus·tri·al·iz·es v.tr. 1. To develop industry in (a country or society, for example). 2. Organization for Economic Cooperation and Development (OECD OECD: see Organization for Economic Cooperation and Development. ) countries for the 1957:Q1 to 2000:Q1 period. Existing studies usually build on a time series framework for a single or a group of countries. In contrast, this article recasts the issue into a dynamic panel framework to exploit both the crosssection and the time series dimensions of the data. Moreover, the dynamic panel data model allows us to control heterogeneity het·er·o·ge·ne·i·ty n. The quality or state of being heterogeneous. heterogeneity the state of being heterogeneous. across countries by the inclusion of countryspecific effects. Second, to measure the effects of both expected and unexpected inflation and inflation uncertainty, we employ generalized autoregressive conditional heteroskedasticity Autoregressive Conditional Heteroskedasticity (ARCH) A nonlinear stochastic process, where the variance is timevarying, and a function of the past variance. ARCH processes have frequency distributions which have high peaks at the mean and fattails, much like fractal distributions. (GARCH GARCH Generalized Autoregressive Conditional Heteroskedasticity )type models to obtain expected and unexpected components of inflation and conditional variance In statistics, conditional variance is a special form of the variance. If we have a conditional distribution YX the conditional variance is defined as where as a proxy for inflation uncertainty. The procedure thus allows us to avoid problems associated with the survey data (see Kandel, Ofer, and Sarig 1996; Woodward 1992, for the detailed discussion) as well as the problem of using volatility (or standard error) to measure inflation uncertainty (Fountas and Karanasos 2007). As argued, conditional variance is better to capture inflation risk and uncertainty. Last, and most importantly Adv. 1. most importantly  above and beyond all other consideration; "above all, you must be independent" above all, most especially , we apply the pooled mean group (PMG PMG abbr. postmaster general PMG 1. Postmaster General 2. Paymaster General ) estimator of Pesaran, Shin shin (shin) the prominent anterior edge of the tibia or the leg. saber shin marked anterior convexity of the tibia, seen in congenital syphilis and in yaws. , and Smith (1999) to estimate short and longrun relationships between real stock returns and inflation. Specifically, the estimator can be applied to either I(1) and/ or I(O) variables and does not require the pretesting of unit roots. (3) By focusing on different time spans, we set the basis for an explanation of the contradictory effects of inflation on real stock returns. This methodology can be summarized as a panel errorcorrection model, where short and longrun effects are estimated jointly from a general autoregressive distributed lag (ARDL ARDL Akron Rubber Development Laboratory, Inc. ARDL American Roller Derby League ARDL Applied Research & Development Laboratory (Mt. Vernon, IL) ) model. The PMG estimator has been recently applied to measure the effect of exchange rate uncertainty on investment (Byrne and Davis 2005a, 2005b), to assess the trade effect of real effective exchange rates by Catao and Solomou (2005), to estimate the impacts of fiscal deficits on inflation (Catao and Terrones, 2005), and to estimate the relationship between financial development and economic growth (Loayza and Ranciere, 2006). Our empirical findings are summarized as follows. First, while anticipated inflation has insignificant shortrun impacts on real stock returns, it tends to have significantly negative longrun impacts on real stock returns. Second, regarding unanticipated inflation, we find that a negative longrun effect coexists with a positive shortrun effect on real stock returns. Finally, inflation uncertainty is found to have independent impacts and tends to exert a significantly negative longrun effect but an insignificant shortrun effect on real stock returns. These findings are robust to alternative measures of expected inflation, unexpected inflation, and inflation volatility. The remainder of this article is organized as follows. Section II introduces the PMG estimator proposed by Pesaran, Shin, and Smith (1999) and elaborates alternative measures of expected and unexpected inflation and inflation uncertainty. Section III describes the data and reports empirical results and robustness tests. Section IV concludes the analysis. II. INFLATION AND REAL STOCK RETURNS A. The Generalized Fisher Hypothesis This section tests the generalized Fisher hypothesis, which states that the real return on common stocks and (both expected and unexpected components of) inflation should vary independently of each other. This conjecture CONJECTURE. Conjectures are ideas or notions founded on probabilities without any demonstration of their truth. Mascardus has defined conjecture: "rationable vestigium latentis veritatis, unde nascitur opinio sapientis;" or a slight degree of credence arising from evidence too weak or too makes sense to many economists since, as claims against real physical capital, common stocks ought to act as a hedge against inflation. (4) This generalized hypothesis is commonly tested by a regression of the form using time series data: (1) [r.sub.t] = [mu] + [theta Theta A measure of the rate of decline in the value of an option due to the passage of time. Theta can also be referred to as the time decay on the value of an option. If everything is held constant, then the option will lose value as time moves closer to the maturity of the option. ][[pi].sup.e.sub.t] + [[epsilon].sub.t], where [r.sub.t] is the real stock returns and [[pi].sup.e.sub.t] is the expected inflation rate. According to the generalized Fisher hypothesis, the real rates of return on common stocks and expected inflation rates are independent. Thus, the coefficient coefficient /co·ef·fi·cient/ (ko?ahfish´int) 1. an expression of the change or effect produced by variation in certain factors, or of the ratio between two different quantities. 2. [theta] should not be significantly different from 0 if the generalized Fisher hypothesis holds. The same logic applies for the unexpected inflation cases. B. The ARDL Approach In this article, as an alternative, we assess the effect of expected inflation on real stock return using panel econometric techniques. In particular, Equation (1) is extended to a panel data specification. Moreover, following conventional wisdom, we assume that there exists a longrun relationship between real stock return ([r.sub.it]) and expected inflation rate ([[pi].sup.e.sub.it]), which can be written as: (2) [r.sub.it] = [[mu].sub.i] + [theta][[pi].sup.e.sub.it] + [[epsilon].sub.it] where [[mu].sub.i] is the fixed (countryspecific) effect, i = 1, 2, ..., N is the country indicator, and t = 1, 2, ..., T is the time index. In the time series framework, Pesaran and Shin (1998) and Pesaran, Shin, and Smith (2001) propose the ARDL models to estimate the longrun cointegrating relationship among variables of interest. In a panel data specification, we follow the suggestion of Pesaran, Shin, and Smith (1999) to nest Equation (2) in an ARDL specification to allow for rich dynamics in the way that real stock return adjusts to changes in the anticipated inflation and to other explanatory ex·plan·a·to·ry adj. Serving or intended to explain: an explanatory paragraph. ex·plan variables, if any. The ARDL(p, q) model, that is, the dependent and independent variables In mathematics, an independent variable is any of the arguments, i.e. "inputs", to a function. These are contrasted with the dependent variable, which is the value, i.e. the "output", of the function. enter the righthand side with lags of order p and q, respectively, can be written as: (3) [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII ASCII or American Standard Code for Information Interchange, a set of codes used to represent letters, numbers, a few symbols, and control characters. Originally designed for teletype operations, it has found wide application in computers. ], where [x.sub.it], is a k x 1 vector of independent variables, which includes only the expected inflation [[pi].sup.e.sub.it] (in some cases, the unexpected inflation [[pi].sup.u.sub.t]), in our main application. In addition to [[pi].sup.e.sub.it], however, we also consider the inflation uncertainty ([h.sub.it]) as an additional explanatory variable in our later application. Equation (3) can be reparameterized and written as: (4) [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII], where [[ph].sub.i] =  (1  [[summation summation n. the final argument of an attorney at the close of a trial in which he/she attempts to convince the judge and/or jury of the virtues of the client's case. (See: closing argument) ].sup.p.sub.j=1] [[lambda].sup.ij], [[beta].sub.i] = [[summation].sup.q.sub.j] = [[delta].sub.ij], [[lambda].sup.*.sub.ij] =  [[summation].sup.p.sub.m=j+1] [[lambda].sub.im], and [[delta].sup.*.sub.ij] =  [[summation].sup.q.sub.m=j+1] [[delta].sub.im], j = 1, 2, ..., q  1. By grouping the variables in levels, Equation (4) can be rewritten as: (5) [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII], where the vector [[theta].sub.i] = [[beta].sub.i]/[[phi].sub.i] defines the longrun equilibrium relationship between [r.sub.it] and [x.sub.it] as [r.sub.it] =  ([[beta]'.sub.i]/[[phi].sub.i])[x.sub.it] + [[eta].sub.it]. In contrast, [[lambda].sup.*.sub.it] and [[delta].sup.*.sub.it] are the shortrun coefficients relating real stock returns to its determinants [x.sub.it]. Finally, [[phi].sub.i] measures the speed of adjustment of [r.sub.it] toward its longrun equilibrium following a given change in [x.sub.it] and [[phi].sub.i] < 0 ensures that such a longrun relationship exists. As a result, a significant and negative value of [phi] can be treated as evidence in support of cointegration between [r.sub.it] and [x.sub.it]. As argued in Catao and Solomou (2005) and Catao and Terrones (2005), the ARDL specification in Equation (5), where all explanatory variables enter the regression with a lag, not only mitigates endogeneity issues but also accommodates the substantial persistence of inflation adjustments and captures potentially rich stock return adjustment dynamics. In addition, the model allows for heterogeneity in the relationship between stock return and expected inflation across countries since the various parameters in Equation (5) are not restricted to be the same across countries. Finally, the ARDL approach allows us to estimate an empirical model that encompasses the long and shortrun stock return effects of expected inflation using a data field composed of a relatively large sample of countries and quarterly observations. There are a few existing procedures for estimating the above model. At one extreme, the simple pooled estimator assumes the fully homogeneouscoefficient model in which all slope and intercept parameters are restricted to be identical across countries. At the other extreme, the fully heterogeneouscoefficient model imposes no crosscountry coefficients constraint Constraint A restriction on the natural degrees of freedom of a system. If n and m are the numbers of the natural and actual degrees of freedom, the difference n  m is the number of constraints. and can be estimated on a countrybycountry basis. This is the socalled mean group (MG) estimator introduced by Pesaran and Smith (1995). The approach amounts to estimate separate ARDL regressions for each group and obtain [theta] and [phi] as simple averages of individual group coefficient [[theta].sub.i] and [[phi].sub.i]. In particular, Pesaran and Smith (1995) show that the MG estimator will provide consistent estimates of the averages of parameters interested. In between these two extremes, the dynamic fixedeffect method allows the intercepts to differ across groups, but it imposes homogeneity Homogeneity The degree to which items are similar. of all slope coefficients and error variances. Alternatively, Pesaran, Shin, and Smith (1999) propose the PMG estimator, which restricts the longrun parameters to be identical over the cross section, but allows the intercepts, shortrun coefficients (including the speed of adjustment), and error variances to differ across groups on the cross section. If the longrun homogeneity restrictions are valid, it is known that MG estimates will be inefficient. In this case, the maximum likelihoodbased PMG approach proposed by Pesaran, Shin, and Smith (1999) will yield a more efficient estimator. (5) As shown in Pesaran, Shin, and Smith (1999), the validity of a crosssectional, longrun homogeneity restriction of the form [[theta].sub.i] = [theta], i = l, 2 , ... *, Nand hence the suitability of the PMG estimatorcan be tested by a standard Hausmantype statistic statistic, n a value or number that describes a series of quantitative observations or measures; a value calculated from a sample. statistic a numerical value calculated from a number of observations in order to summarize them. . In terms of the real stockinflation relation, the PMG estimator offers the best available compromise in the search for consistency and efficiency. This estimator is particularly useful when the long run is given by conditions expected to be homogeneous The same. Contrast with heterogeneous. homogeneous  (Or "homogenous") Of uniform nature, similar in kind. 1. In the context of distributed systems, middleware makes heterogeneous systems appear as a homogeneous entity. For example see: interoperable network. across countries, while the shortrun adjustment depends on country characteristics such as monetary and fiscal adjustment mechanisms, capital market imperfections, and relative price and wage flexibility (e.g., Loayza and Ranciere 2006). Therefore, we use the PMG method to estimate a longrun relationship that is common across countries while allowing for unrestricted country heterogeneity in the adjustment dynamics. C. Measures of Expected Inflation and Inflation Uncertainty To estimate the Fisher regression, we need a measure of expected inflation [[pi].sup.e.sub.it]. First, we follow Gultekin (1983) to use contemporaneous con·tem·po·ra·ne·ous adj. Originating, existing, or happening during the same period of time: the contemporaneous reigns of two monarchs. See Synonyms at contemporary. inflation rates as proxies for expected inflation. The realized values are used under the assumption that expectations are rational. Second, we rely on a pure autoregressive integrated moving average In statistics, an autoregressive integrated moving average (ARIMA) model is a generalisation of an autoregressive moving average or (ARMA) model. These models are fitted to time series data either to better understand the data or to predict future points in the series. (ARIMA) model to generate expected inflation and unexpected inflation. Inflation forecasts from ARIMA regressions are used as indicators of expected inflation, while the forecast errors are used as the measure of unexpected inflation [[pi].sup.u.sub.it]. The model is expressed as: (6) [[pi].sub.t] = [[alpha].sub.0] + [p.summation over (i=1)] [[alpha].sub.i][[pi].sub.ti] + [q.summation over (j=1)] [[phi].sub.j][[epsilon].sub.tj], where [[epsilon].sub.tj] is a white noise process. Third, to allow for conditional hgteroskedasticity, we assume that [[epsilon].sub.tj][[OMEGA 1. (programming) Omega  A prototypebased objectoriented language from Austria. ["TypeSafe ObjectOriented Programming with Prototypes  The Concept of Omega", G. Blaschek, Structured Programming 12:217225, 1991]. 2. ].sub.t1] = [h.sup.1/2.sub.t][[eta].sub.t] and [[eta].sub.t] ~ NID NID Next ID NID Network Interface Device NID No I Don't NID Namespace Identifier NID National Intelligence Director NID New Iraqi Dinar NID No I Didn't NID Network Identification NID National Inventory of Dams NID NCVA (0, 1). Particularly, we consider three alternative specifications of the conditional variance [h.sub.t] for each country. The first one is the GARCH(1,1) process set out by Bollerslev (1986), which can be specified as: (7) [h.sub.t] = [a.sub.0] + [a.sub.1][h.sub.t1] + [b.sub.1][[epsilon].sup.2.sub.t1]. By taking account of the asymmetric A difference between two opposing modes. It typically refers to a speed disparity. For example, in asymmetric operations, it takes longer to compress and encrypt data than to decompress and decrypt it. Contrast with symmetric. See asymmetric compression and public key cryptography. effects of negative and positive shocks, the second specification for the conditional variance is the exponential 1. (mathematics) exponential  A function which raises some given constant (the "base") to the power of its argument. I.e. f x = b^x If no base is specified, e, the base of natural logarthims, is assumed. 2. GARCH (EGARCH) process proposed by Nelson (1991). The specification can be written as: (8) In ([h.sub.t]) = [a.sub.0] + [a.sub.1]ln ([h.sub.t1]) + [b.sub.1][absolute value of [[epsilon].sub.t1]/[square root of [h.sub.t1]]] + [c.sub.1][[epsilon].sub.t1]/[square root of [h.sub.t1]]]. And the third and last model for the conditional variance is an extension of the basic GARCH model. Engle and Lee (1999) represent the GARCH(1,1) model as characterized char·ac·ter·ize tr.v. character·ized, character·iz·ing, character·iz·es 1. To describe the qualities or peculiarities of: characterized the warden as ruthless. 2. by reversion reversion: see atavism. to a constant mean [bar.[mu]], that is, (9) [h.sub.t] = [bar.[mu]] + [a.sub.1]([h.sub.t1]  [bar.[mu]]) + [b.sub.1]([[epsilon].sup.2.sub.t1]  [bar.[mu]]). In contrast, their component GARCH (CGARCH) process allowing reversion to a timevarying mean [m.sub.t] is modeled as: (10) [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII]. By estimating Equation (6) along with Equations (7), (8), and (10), respectively, we can obtain expected and unexpected components of inflation. Moreover, we follow conventional applications such as Asteriou and Price (2005) and Byrne and Davis (2005a, 2005b) to proxy inflation uncertainty by the logarithm logarithm (lŏg`ərĭthəm) [Gr.,=relation number], number associated with a positive number, being the power to which a third number, called the base, must be raised in order to obtain the given positive number. of the fitted (conditional) volatility values from Equations (7), (8), and (10), respectively. The corresponding inflation uncertainty measures are denoted as [h.sup.g.sub.it], [h.sup.eg.sub.it], and [h.sup.cg.sub.it], respectively. In addition to expected inflation, they are used to assess the effect of inflation uncertainty on real stock returns. III. DATA AND EMPIRICAL RESULTS The generalized Fisher hypothesis is examined using quarterly data on a panel of 16 industrialized OECD countries. These countries include Australia, Austria, Belgium, Canada, Finland, France, Germany, Ireland, Italy, Japan, The Netherlands, New Zealand New Zealand (zē`lənd), island country (2005 est. pop. 4,035,000), 104,454 sq mi (270,534 sq km), in the S Pacific Ocean, over 1,000 mi (1,600 km) SE of Australia. The capital is Wellington; the largest city and leading port is Auckland. , Norway, Spain, the United Kingdom, and the United States United States, officially United States of America, republic (2005 est. pop. 295,734,000), 3,539,227 sq mi (9,166,598 sq km), North America. The United States is the world's third largest country in population and the fourth largest country in area. . The sample period runs from 1957:Q1 to 2000:Q1, with a few exceptions. The original observations are collected by Rapach (2002) from the International Monetary Fund's International Financial Statistics. (6) The inflation rate is computed by taking first differences of the natural logarithm Natural logarithm Logarithm to the base e (approximately 2.7183). of the consumer price index. And the real stock return is computed as the differences of the natural logarithm of the nominal share price index deflated de·flate v. de·flat·ed, de·flat·ing, de·flates v.tr. 1. a. To release contained air or gas from. b. To collapse by releasing contained air or gas. 2. by the consumer price index. Table 1 reports basic statistics for inflation and real stock return variables for each country. As shown, Germany has the lowest average inflation, while Spain has the highest average inflation. Also, Belgium has the lowest average rate of stock return, whereas Finland has the highest average rate of stock return. Moreover, the correlation coefficients between inflation rates and real stock returns are negative for all countries. A. The Effects of Expected Inflation As a benchmark, we first test the generalized Fisher hypothesis using realized inflation as a proxy for expected inflation via the PMG methodology. The procedure is as follows. First, the estimates of the longrun slope parameters are obtained jointly across countries through a (concentrated) maximum likelihood procedure. Second, the estimation estimation In mathematics, use of a function or formula to derive a solution or make a prediction. Unlike approximation, it has precise connotations. In statistics, for example, it connotes the careful selection and testing of a function called an estimator. of shortrun coefficients along with the speed of adjustment, countryspecific intercepts and error variances are done on a countrybycountry basis also through maximum likelihood and using the estimates of the longrun slope coefficients previously obtained. Table 2 displays the results on specification tests and the estimation of long and shortrun parameters linking real stock returns and inflation. (7) We emphasize the results from using the PMG estimator, considering its gains in consistency and efficiency over other panel errorcorrection estimators. For comparison purposes, We also present the results obtained with the MG estimator. To check the existence of a longrun relationship (dynamic stability), the coefficient on the errorcorrection term should be negative and within the unit circle. As can be seen in Table 2, the pooled errorcorrection coefficient estimates are significantly negative and fall within the dynamically stable range for both PMG and MG estimators, giving evidence of mean reversion Mean Reversion A strategy that involves purchasing an underperforming stock or another type of security and holding the position until the market rebounds. Notes: to a nonspurious longrun relationship and therefore stationary residuals. In addition, the Hausman test The Hausman test is a test in econometrics named after Jerry Hausman. The test evaluates the significance of an estimators versus an alternative estimator. If the linear model of longrun homogeneity restriction is not rejected, indicating that the PMG estimator is more suitable for the analysis, relative to the MG estimator. Accordingly, the following analysis focuses on the PMG approach. Regarding the estimated parameters, we find that the longrun estimate of inflation is highly significant and negative, meaning that real stock returns are strongly and negatively linked to realized inflation in the long run. However, the shortrun coefficients on inflation tell a different story. As explained, shortrun coefficients are not restricted to be the same across countries, so that we do not have a single pooled estimate for each coefficient. Nevertheless, we can still analyze the average shortrun effect by considering the mean of the corresponding coefficients across countries. As shown in Table 2, the shortrun average relationship between real stock returns and inflation appears to be positive but insignificant. This finding is consistent with the generalized Fisher hypothesis of zero correlation between real stock returns and inflation. Stocks, as claims against productive capital, can fully protect shareholders from changes in (expected) inflation. To check if these results are sensitive to model specification (time trend and/or seasonal effects), Table 3 reports these robustness tests. The estimation outcome is qualitatively similar to that in Table 2. The signs and statistical significance of both long and shortrun coefficients remain unchanged. Moreover, the pooled errorcorrection coefficients continue to be significantly negative and within the unit circle. Furthermore, the long and shortrun effects of inflation on real stock returns are not only qualitatively but also quantitatively very similar to those in Table 2. As another robustness check, we experiment with alternative measures of expected inflation. As mentioned earlier, we extract expected components of inflation from a simple ARIMA model and the ARIMA model with GARCH, EGARCH, and CGARCH processes, respectively. The corresponding results are presented in Table 4. As shown, the pooled errorcorrection estimates continue to signal longrun cointegration between real stock returns and unexpected inflation, irrespective of irrespective of prep. Without consideration of; regardless of. irrespective of preposition despite alternative unexpected inflation measures. Moreover, the longrun coefficient estimates remain significantly negative, while the shortrun coefficient estimates remain insignificant, irrespective of different measures of expected inflation. Finally, to make sure our results are not pertaining per·tain intr.v. per·tained, per·tain·ing, per·tains 1. To have reference; relate: evidence that pertains to the accident. 2. to a specific sample, we segregate seg·re·gate v. seg·re·gat·ed, seg·re·gat·ing, seg·re·gates v.tr. 1. To separate or isolate from others or from a main body or group. See Synonyms at isolate. 2. the sample into two groups, G7 and nonG7 country categories. The results are reported in Table 5. Specifically, Panel A of Table 5 reports the results for G7 countries, while Panel B of Table 5 reports the results for nonG7 countries. Once again, they are qualitatively similar to those with the full sample, confirming negative longrun correlation but zero correlation between real stock returns and expected inflation in the short run. B. The Effects of Unexpected Inflation This section examines the generalized Fisher hypothesis using unexpected inflation. As mentioned, the unexpected inflation is measured as the difference between the actual and the expected inflation extracted above. Table 6 summarizes the estimation results. As can be seen, the estimates for the pooled errorcorrection coefficient are significantly negative and lie inside the unit circle, indicating the existence of longrun relationship between real stock returns and unexpected inflation. Moreover, the longrun coefficient estimates are negative and highly significant, whereas the shortrun coefficient estimates are positive and strongly significant, irrespective of alternative measures of unexpected inflation. The findings suggest that while unexpected inflation has a positive impact on real stock returns in the short run, it tends to affect real stock returns in a negative way in the long run. Accordingly, the evidence of coexistence co·ex·ist intr.v. co·ex·ist·ed, co·ex·ist·ing, co·ex·ists 1. To exist together, at the same time, or in the same place. 2. of a positive shortrun effect of unexpected inflation with a negative longrun effect of unexpected inflation implies that stocks are a poor hedge against unexpected inflation. The results also hold for different subsamples as shown in Table 7, where countries are split into G7 and nonG7 country groups. In either country group, the pooled errorcorrection coefficient estimates fall within the dynamically stable range, meaning that real stock returns and unexpected inflation are cointegrated. Moreover, the sign and statistical significance of all long and shortrun coefficients remain unchanged, and the magnitude of long and shortrun coefficients is qualitatively similar to those with full sample. The data again confirm that stocks are a poor hedge against unexpected inflation, irrespective of time frequency, unexpected inflation indicators, and sample size considered. C. The Effects of Inflation Uncertainty This section evaluates the impacts of inflation uncertainty on real stock returns. As suggested by Friedman (1977), an increase in inflation variability adversely affects economic activity because it reduces the role of prices in guiding market activity and increases the cost of assimilating as·sim·i·late v. as·sim·i·lat·ed, as·sim·i·lat·ing, as·sim·i·lates v.tr. 1. Physiology a. To consume and incorporate (nutrients) into the body after digestion. b. information. This negative real effect of inflation volatility is supported by Fischer (1981) and Holland (1988), among others. On the other hand, Berument, Ceylan, and Olgun (2007) point out that modeling inflation volatility is necessary in that riskaverse agents tend to consider both anticipated macroeconomic mac·ro·ec·o·nom·ics n. (used with a sing. verb) The study of the overall aspects and workings of a national economy, such as income, output, and the interrelationship among diverse economic sectors. variables and associated risk of the variables in their decisionmaking process. In that sense, a real effect of inflation uncertainty is expected. For example, based on a precautionary motive and the assumption of riskaverse agents, Dotsey and Sarte (2000) suggest that more inflation uncertainty raises saving and hence investment and economic growth. The impact of inflation volatility is thus an empirical matter. To explore whether stocks are a good hedge against variable inflation, we need an indicator of inflation uncertainty. Since there are different ways to model inflation uncertainty, here, as mentioned, the inflation uncertainty is measured by conditional variance obtained from the GARCH, EGARCH, and CGARCH processes, respectively. Table 8 reports the estimation results when both expected inflation and inflation uncertainty measures are included as explanatory variables. Clearly, the pooled errorcorrection coefficient estimates continue to be negative and significant, suggesting a longrun equilibrium relationship among real stock returns, expected inflation, and inflation uncertainty. As expected, anticipated inflation measures maintain significantly negative longrun impacts along with insignificant shortrun impacts on real stock returns in all regressions. Notably, inflation uncertainty appears to have a negative longrun effect but an insignificant shortrun impact on real stock returns, irrespective of alternative inflation uncertainty indicators. The evidence indicates that both the level and the uncertainty of inflation contribute to lower real stock returns in the long run but exert little shortrun influence on real stock returns. Moreover, the observed negative longrun effect of inflation uncertainty agrees with the proposition of malfunctioning mal·func·tion intr.v. mal·func·tioned, mal·func·tion·ing, mal·func·tions 1. To fail to function. 2. To function improperly. n. 1. Failure to function. 2. price mechanism due to more volatile inflation. IV. CONCLUSIONS In the Fisherian world, inflation is a purely monetary phenomenon in the sense that it has no real effect on economy activities. However, because of imperfect capital markets, inertia inertia (ĭnûr`shə), in physics, the resistance of a body to any alteration in its state of motion, i.e., the resistance of a body at rest to being set in motion or of a body in motion to any change of speed or change in direction of , and/or contractual obligation, changes in inflation may have different influence on real activities in the short run and long run. By recognizing this possibility, this article estimates an encompassing empirical model of the longand shortrun effects of inflation on real stock returns using a sample of crosscountry and time series observations. We implement the analysis using the PMG methodology of Pesaran, Shin, and Smith (1999), which allows for shortrun heterogeneity across countries but longrun homogeneity among sample countries. Our empirical results are summarized as follows. First, in terms of anticipated component of inflation, we find that the Fisher effect Fisher Effect A theory describing the longrun relationship between inflation and interest rates. Notes: This equation tells us that, all things being equal, a rise in a country's expected inflation rate will eventually cause an equal rise in the interest rate (and vice appears to hold at short horizons, where expected inflation has insignificant shortrun impacts on real stock returns but not at longer horizons and where anticipated inflation is found to have negative longrun impacts on real stock returns. Second, regarding unanticipated inflation, we find that a negative longrun effect coexists with a positive shortrun effect. The evidence thus invalidates the Fisher hypothesis and suggests that stocks are a poor hedge against unexpected inflation. Third, as for inflation uncertainty similar to the expected inflation case, we find that while inflation uncertainty has a negative longrun effect on real stock returns, it has an insignificant shortrun effect on real stock returns. Finally, these results are found to be robust to alternative measures of expected and unexpected inflation and inflation uncertainty. It is noted that this article focuses on advanced countries. It will be interesting and vital to test the generalized Fisher hypothesis for both developed and developing countries to gain the whole picture of the real stock returnsinflation relation. Moreover, since inflation exerts different long and shortrun impacts on real stock returns, it would be important for both theoretical models and empirical studies to explore the exact mechanisms through which inflation, both expected and unexpected, and inflation uncertainty affect real stock returns at different time lengths. 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Review of Economics and Statistics, 74, 1992, 31520. (5.) Provided that there is a unique vector defining the longrun relationship among variables involved, and the lag orders p and q are suitably chosen, MG and PMG estimates of an ARDL regression yield consistent estimates of that vector, regardless of whether the variables involved are I(1) or I(0). (6.) All the data used in this article can be downloaded from the Web site of Rapach at http://pages.slu.edu/ faculty/rapachde/. (7.) Loayza and Ranciere (2006) suggest that when the main interest is on the longrun parameters, the lag order of the ARDL can be selected using some consistent information criteria The introduction to this article provides insufficient context for those unfamiliar with the subject matter. Please help [ improve the introduction] to meet Wikipedia's layout standards. You can discuss the issue on the talk page. on a countrybycountry basis; however, when there is also interest in analyzing and comparing the shortrun parameters, it is recommended to impose a common lag structure across countries. Thus, in this article, we use the latter procedure and set p = q = 1, for simplicity. For robustness check, we have also tried different orders for p and q selected by Akaike information criterion Akaike's information criterion, developed by Hirotsugu Akaike under the name of "an information criterion" (AIC) in 1971 and proposed in Akaike (1974), is a measure of the goodness of fit of an estimated statistical model. It is grounded in the concept of entropy. , Schwarz Bayesian criterion, and Hannan and Quinn, respectively. We found qualitatively and quantitatively similar results. (8.) We thank one anonymous referee for this point. ABBREVIATIONS ARDL: Autoregressive Distributed Lag ARIMA: Autoregressive Integrated Moving Average CGARCH: Component Generalized Autoregressive Conditional Heteroskedasticity EGARCH: Exponential Generalized Autoregressive Conditional Heteroskedasticity GARCH: Generalized Autoregressive Conditional Heteroskedasticity MG: Mean Group OECD: Organization for Economic Cooperation and Development PMG: Pooled Mean Group doi: 10.1111/j.14657295.2009.00193.x (1.) Originally, Fisher (1930) maintains that nominal interest rates fully reflect available information about the future values of inflation rates, and thus, nominal interest rates should move oneforone with inflation, both ex ante and ex post, under the assumption that real interest rates are independent of movements in inflation. Fama and Schwert (1977) argue that this Fisher hypothesis, based on a complete dichotomy di·chot·o·my n. pl. di·chot·o·mies 1. Division into two usually contradictory parts or opinions: "the dichotomy of the one and the many" Louis Auchincloss. between the real and the monetary sectors of the economy, can be generalized to stocks and other forms of assets. (2.) Several theoretical explanations have been put forth for the negative relationship of stock returns with inflation. For example, the MundellTobin hypothesis is based on the Pigou real wealth effect in explaining a negative relationship between asset returns and inflation and in supporting monetary nonneutrality. However, the money illusion hypothesis states that stock market investors suffer from money illusion and incorrectly discount real cash flows with nominal discount rates, thereby causing the market's subjective expectation of the future equity premium to deviate systematically from the rational expectations (e.g., Asness 2000; Cohen, Polk, and Vuolteenaho 2005; Modigliani and Cohn 1979; Sharpe 2002). In addition, the proxy hypothesis suggests that the observed negative relationship between stock returns and inflation is proxying for a positive relation between stock returns and real variables and a negative relation between inflation and real activity (e.g., Fama 1981, 1983; Geske and Roll 1983). (3.) As long as there exists longrun relationship, whether variables are integrated is not required for the PMG methodology. (4.) As defined in Bodie (1976, 460), a security is an inflation hedge Inflation hedge Investments designed to hedge against inflation and the loss of purchasing power associated with it. inflation hedge An investment with a value directly related to the level of general price changes. if and only if its real return is independent of the rate of inflation. ShuChin Lin * * I am grateful to M. Hashem Pesaran and David E. Rapach for making publicly available their computer code and data used in this article, respectively. I also thank Vincenzo Quadrini (the editor) and River Huang for helpful suggestions and comments and Albert Suen for excellent research assistance. Any remaining errors are my own responsibility. Lin: Professor, Department of Economics, Tamkang University Tamkang University (Traditional Chinese: 淡江大學; Simplified Chinese: 淡江大学 , 151 YingChun Road, Tamsui 25137, Taipei County Taipei County (Traditional Chinese: 臺北縣 or 台北縣; Hanyu Pinyin: Táiběi Xiàn; Tongyong Pinyin: Táiběi Siàn; WadeGiles: T'aipei Hsien; Pe̍hōejī: Tâipakkoān) is located in northern Taiwan and encircles Taipei , Taiwan, Republic of China. Phone +886226215656 ext 3359, Fax +886226209654, Email: econscl@mail.tku.edu.tw TABLE 1 Basic Statistics and Sample Coverage corr Country Name r [pi] (r, [pi]) Australia 0.5445 1.3271 0.3035 Austria 0.3968 0.9277 0.0516 Belgium 0.2152 1.0359 0.2377 Canada 0.5339 1.0832 0.2070 Finland 1.7829 1.4586 0.4056 French 0.6694 1.3688 0.2257 Germany 0.9859 0.8136 0.2497 Ireland 1.1471 1.6229 0.1212 Italy 0.2872 1.7502 0.1028 Japan 0.9841 1.0227 0.2725 The Netherlands 1.0647 0.9773 0.1766 New Zealand 0.0579 1.7439 0.2684 Norway 0.5207 1.3270 0.2264 Spain 0.2744 2.0856 0.1661 United Kingdom 0.8567 1.5860 0.1137 United States 1.0598 1.0533 0.3895 Country Name Period Observations Australia 1957:02 to 2000:01 172 Austria 1957:02 to 1998:04 167 Belgium 1957:02 to 1996:02 157 Canada 1957:02 to 2000:01 172 Finland 1957:02 to 2000:01 172 French 1957:02 to 2000:01 172 Germany 1970:02 to 2000:01 120 Ireland 1957:02 to 2000:01 172 Italy 1957:02 to 2000:01 172 Japan 1957:02 to 2000:01 172 The Netherlands 1957:02 to 2000:01 172 New Zealand 1961:02 to 2000:01 156 Norway 1957:02 to 2000:01 172 Spain 1961:02 to 2000:01 156 United Kingdom 1958:02 to 1999:01 164 United States 1957:02 to 2000:01 172 Notes: The reported values are the means of the real stock return (r) and inflation ([pi]). In addition, the correlation coefficients between r and [pi] for all countries over alternative sample periods and corresponding (quarterly) observations are also reported. TABLE 2 The Effect of Inflation on Real Stock Return PMG MG Longrun coefficient [[pi].sub.it] 1.8405 *** (0.1843) 1.8799 *** (0.2056) Errorcorrection coefficient [phi] 0.7564 *** (0.0231) 0.7613 *** (0.0229) Shortrun coefficients [DELTA][[pi].sub.it] 0.0037 (0.2419) 0.1345 (0.2554) c 2.3810 *** (0.1638) 2.4454 *** (0.3389) Hausman Test Longrun coefficient [[pi].sub.it] 0.1878 (0.6647) Errorcorrection coefficient [phi] Shortrun coefficients [DELTA][[pi].sub.it] c Notes: The values in the parenthesis are the standard errors of corresponding coefficients. For Hausman test of long run parameter homogeneity, the value in the bracket is the corresponding p value. *** indicates significance at 1% level. TABLE 3 Robustness Check T Qs Longrun coefficient [[pi].sub.it] 2.1497 *** (0.2257) 2.0727 *** (0.1987) Errorcorrection coefficient [phi] 0.7546 *** (0.0195) 0.7361 *** (0.0193) Shortrun coefficients [DELTA][[pi].sub.it] 0.3596 (0.2738) 0.1329 (0.2328) T 0.0569 (0.4174) Q1 0.6800 (0.7766) Q2 0.2583 (0.9859) Q3 0.2060 (0.7801) c 2.6969 *** (0.2633) 2.3554 *** (0.6372) T plus Qs Longrun coefficient [[pi].sub.it] 2.2462 *** (0.2257) Errorcorrection coefficient [phi] 0.7397 *** (0.0200) Shortrun coefficients [DELTA][[pi].sub.it] 0.0639 (0.2347) T 0.0576 (0.4394) Q1 0.6862 (0.7768) Q2 0.2620 (0.9898) Q3 0.2010 (0.7802) c 2.5531 *** (0.6746) Notes: T denotes trend and Qs denote seasonal dummies. The values in the parenthesis are the standard errors of corresponding coefficients. *** indicates significance at 1% level. TABLE 4 Alternative Expected Inflation on Real Stock Return ARIMA ARIMA (a) GARCH (b) Longrun coefficient [[pi].sup.e.sub.it] 1.9063 *** (0.2555) 1.8290 *** (0.2611) Errorcorrection coefficient [phi] 0.7443 *** (0.0184) 0.7437 *** (0.0191) Shortrun coefficients [DELTA][[pi].sup.e. sub.it] 0.7154 (0.8088) 0.2265 (0.7557) c 2.4293 *** (0.1403) 2.2899 *** (0.1266) ARIMA EGARCH (b) CGARCH (b) Longrun coefficient [[pi].sup.e.sub.it] 1.8156 *** (0.2551) 1.9146 *** (0.2606) Errorcorrection coefficient [phi] 0.7468 *** (0.0195) 0.7472 *** (0.0194) Shortrun coefficients [DELTA][[pi].sup.e. sub.it] 0.1156 (0.7716) 0.3025 (0.6777) c 2.3078 *** (0.1274) 2.3699 *** (0.1348) Notes: The values in the parenthesis are the standard errors of corresponding coefficients. (a) The fitted value of inflation ([[pi].sup.e.sub.it]) from a pure ARIMA model as in Equation (6) for each country. (b) The fitted value of inflation ([[pi].sup.e.sub.it]) from an ARIMA model with alternative conditional heteroskedasticity specifications as in Equations (7), (8), and (l U), respectively. *** indicates significance at 1% level. TABLE 5 Subsample ResultsExpected Inflation on Real Stock Return ARIMA ARIMA GARCH Panel A: G7 countries Longrun coefficient [[pi].sup.e.sub.it] 1.6812 *** (0.3764) 1.5573 *** (0.3970) Errorcorrection coefficient [phi] 0.7429 *** (0.0240) 0.7422 *** (0.0239) Shortrun coefficients [DELTA][[pi].sup.e. sub.it] 0.3598 (0.7431) 0.6735 (0.9021) C 2.1542 *** (0.0684) 1.9613 *** (0.0494) Panel B: nonG7 countries Longrun coefficient [[pi].sup.e.sub.it] 2.1012 *** (0.3470) 2.0429 *** (0.3459) Errorcorrection coefficient [phi] 0.7460 *** (0.0280) 0.7456 *** (0.0294) Shortrun coefficients [DELTA][[pi].sup.e. sub.it] 1.5536 (1.2955) 0.1239 (1.1859) c 2.6918 *** (0.2692) 2.5852 *** (0.2456) ARIMA EGARCH CGARCH Panel A: G7 countries Longrun coefficient [[pi].sup.e.sub.it] 1.4028 *** (0.3688) 1.5484 *** (0.3810) Errorcorrection coefficient [phi] 0.7418 *** (0.0239) 0.7428 *** (0.0238) Shortrun coefficients [DELTA][[pi].sup.e. sub.it] 0.5332 (0.8409) 0.6632 (0.9189) C 1.8857 *** (0.0552) 1.9617 *** (0.0562) Panel B: nonG7 countries Longrun coefficient [[pi].sup.e.sub.it] 2.1970 *** (0.3506) 2.2399 *** (0.3555) Errorcorrection coefficient [phi] 0.7527 *** (0.0303) 0.7521 *** (0.0301) Shortrun coefficients [DELTA][[pi].sup.e. sub.it] 0.2308 (1.2491) 0.0005 (1.0135) c 2.7442 *** (0.2643) 2.7781 *** (0.2729 Notes: The G7 countries are Canada, France, Germany, Italy, Japan, United Kingdom, and United States. The non G7 countries include Australia, Austria, Belgium, Finland, Ireland, The Netherlands, New Zealand, Norway, and Spain. The values in the parenthesis are the standard errors of corresponding coefficients. *** indicates significance at 1% level. TABLE 6 The Effects of Unexpected Inflation on Real Stock Return ARIMA ARIMA GARCH Longrun coefficient [[pi].sup.u.sub.it] 2.5082 *** (0.4046) 2.6229 *** (0.3823) Errorcorrection coefficient [phi] 0.7257 *** (0.0179) 0.7286 *** (0.0177) Shortrun coefficients [DELTA][[pi].sup.u. sub.it] 0.6815 *** (0.2220) 0.7061 *** (0.2188) c 0.5540 *** (0.0924) 0.6447 *** (0.1023) ARIMA EGARCH CGARCH Longrun coefficient [[pi].sup.u.sub.it] 2.5752 *** (0.3896) 2.6533 *** (0.3973) Errorcorrection coefficient [phi] 0.7258 *** (0.0183) 0.7280 *** (0.0177) Shortrun coefficients [DELTA][[pi].sup.u. sub.it] 0.7083 *** (0.2242) 0.7482 *** (0.2114) c 0.6145 *** (0.0900) 0.6600 *** (0.1022) Notes: The values in the parenthesis are the standard errors of corresponding coefficients. *** indicates significance at 1% level. TABLE 7 Subsample ResultsUnexpected Inflation on Real Stock Return ARIMA ARIMA GARCH Panel A: G7 countries Longrun coefficient [[pi].sup.u.sub.it] 2.5162 *** (0.6845) 2.7490 *** (0.6124) Errorcorrection coefficient [phi] 0.7230 *** (0.0258) 0.7270 *** (0.0257) Shortrun coefficients [DELTA][[pi].sup.u. sub.it] 0.9255 ** (0.4031) 0.9032 ** (0.4192) c 0.6174 *** (0.0905) 0.7485 *** (0.0889) Panel B: nonG7 countries Longrun coefficient [[pi].sup.u.sub.it] 2.5041 *** (0.5017) 2.5438 *** (0.4898) Errorcorrection coefficient [phi] 0.7278 *** (0.0261) 0.7298 *** (0.0257) Shortrun coefficients [DELTA][[pi].sup.u. sub.it] 0.4926 ** (0.2438) 0.5598 ** (0.2320) c 0.5047 *** (0.1517) 0.5663 *** (0.1689) ARIMA EGARCH CGARCH Panel A: G7 countries Longrun coefficient [[pi].sup.u.sub.it] 2.7003 *** (0.6310) 2.9373 *** (0.6655) Errorcorrection coefficient [phi] 0.7236 *** (0.0272) 0.7264 *** (0.0263) Shortrun coefficients [DELTA][[pi].sup.u. sub.it] 0.9224 ** (0.4331) 0.9680 ** (0.412) c 0.6442 *** (0.0897) 0.7429 *** (0.0979) Panel B: nonG7 countries Longrun coefficient [[pi].sup.u.sub.it] 2.5004 *** (0.4957) 2.4984 *** (0.4956) Errorcorrection coefficient [phi] 0.7275 *** (0.0263) 0.7292 *** (0.0254) Shortrun coefficients [DELTA][[pi].sup.u. sub.it] 0.5500 ** (0.2322) 0.6015 *** (0.2215) c 0.5896 *** (0.1491) 0.5984 *** (0.1680) Notes. The G7 countries are Canada, France, Germany, Italy, Japan, United Kingdom, and United States. The non G7 countries include Australia, Austria, Belgium, Finland, Ireland, The Netherlands, New Zealand, Norway, and Spain. The values in the parenthesis are the standard errors of corresponding coefficients. *** and ** indicate significance at 1% and 5% levels. TABLE 8 The Effect of Inflation Uncertainty ARIMA GARCH EGARCH Longrun coefficients [[pi].sup.e.sub.it] 1.6872 *** (0.2934) 1.1020 *** (0.3312) [h.sup.g.sub.it] 0.2919 (0.3164) 1.1948 *** (0.3510) [h.sup.cg.sub.it] Errorcorrection coefficient [phi] 0.7440 *** (0.0192) 0.7508 *** (0.0193) Shortrun coefficients [DELTA][[pi].sup.e. sub.it] 0.2033 (0.7480) 0.5196 (0.7107) [DELTA][h.sup.g. sub.it] 0.3659 (0.6442) [DELTA][h.sup.eg. sub.it] 0.4025 (1.0679) [DELTA][h.sup.cg. sub.it] c 1.9457 *** (0.1310) 0.7608 *** (0.1807) ARIMA CGARCH Longrun coefficients [[pi].sup.e.sub.it] 1.6661 *** (0.2872) [h.sup.g.sub.it] [h.sup.cg.sub.it] 0.6100 *** (0.2931) Errorcorrection coefficient [phi] 0.7482 *** (0.0199) Shortrun coefficients [DELTA][[pi].sup.e. sub.it] 0.3993 (0.6604) [DELTA][h.sup.g. sub.it] [DELTA][h.sup.eg. sub.it] [DELTA][h.sup.cg. sub.it] 1.7715 (1.1036) c 1.7203 *** (0.1611) Notes: The values in the parenthesis are the standard errors of corresponding coefficients. *** indicates significance at 1% level. 

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